It's a 700R4. It's an overdrive tranny, right? If it's a square pan, it's a 700R4.
No 85 1/2 tons came with V-6's and TH400's. The auto options were TH350C's 3 speed, and 700R4's 4 speed.
Keep the 700R4 with the 350. A great combo. Of course the 85 700 is not as good as the later years. Mine went out and I replaced it with one from a 89. The mid 88 thru 92's are the best years.
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Mike
1985 Chevy C-10
Mike's 73-87 Chevy Pickup Site
[This message has been edited by swervin ervin (edited 10-03-2000).]